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本文根据北京地区的调查和试验田的资料分析所得的穗数与穗粒重的关系,把北京地区麦田的栽培管理水平(主要指包括地力和肥水等栽培措施的综合作用)分为八个等级。分别以在各级麦田上所表现的穗数与穗粒重的关系作为衡量合理密植的标准。举一些实例说明“栽培管理水平等级表”在生产上的应用。根据不同栽培管理条件下基本苗数与穗数关系,多穗株与少穗株的产量表现,和不同等级麦田的合理穗数要求,提出确定基本苗数和播种量的一些参考原则和数量指标。
Based on the data from the survey and experimental fields in Beijing, the paper analyzes the relationship between the number of spikes and the grain weight per panicle and classifies the cultivation and management level of wheat fields in Beijing (mainly including the combined effects of soil fertility and other cultivation measures) into eight grades. The relationship between the number of spikes per panicle and the weight of grains per spike was respectively taken as the standard of close planting density. Give some examples to illustrate the application of “Cultivation Management Level Scale” in production. According to the relationship between the basic number of seedlings and the number of spikes under different cultivation and management conditions, the yield performance of multi-spike plants and few spike plants and the reasonable number of spikes of different grades of wheat fields, some reference principles and quantitative indicators for determining the basic seedling number and sowing volume .